Elevate your engine maintenance with this essential Piston Ring Compressor Assembly Tool, specifically designed for Cummins M11, ISM, QSM, L10, and Mitsubishi 6D22 engines. It's an indispensable tool for installing piston rings accurately and efficiently, ensuring your engine's performance is precisely where it needs to be. With a bore size of 125mm, it's crafted to fit seamlessly into your engine assembly, promoting a smooth installation process. Constructed with durability in mind, this unbranded compressor installer tool originates from China, boasting a robust design that meets the high standards of professional mechanics and DIY enthusiasts alike. Whether you're looking to maintain your engine's health or restore it to its peak performance, this piston ring compressor is an integral component in your toolkit.